Duchesne County · reservoir · 294 acres
Upper Stillwater Reservoir
Stocked 2× on record · Utah DWR
Upper Stillwater Reservoir is a reservoir in Duchesne County, Utah, stocked with Brook Trout — most recently on Jul 16, 2026. FishableWaters aggregates every stocking record for this water from Utah DWR; the latest schedule and today's bite windows are above.
Best days this week
Days near a new or full moon tend to fish best.
Today's bite windows
Conditions, next 3 days
Today
Overcast
83°
54°
14 mph
8%
Fri
Overcast
84°
59°
14 mph
1%
Sat
Overcast
89°
65°
13 mph
1%
↗ pressure risingPost-front rising pressure can slow things down for a day.
Stocking ledger
| — 2026 — | ||||
| Jul 16 | Brook Trout | 7,319 | 3.45" | |
| Jun 2 | Brook Trout | 3,004 | 3.12" | |
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
Nearby waters
- South Fork Rock Creek1.7 mi
- West Fork Rock Creek1.9 mi
- East Fork Rock Creek2.6 mi
- Audry Lake2.2 mi
- Cabin Lake3.0 mi
- Docs Lake3.0 mi
- Red Cliff Lake3.2 mi
- Horseshoe Lake4.0 mi
Seasons, limits, and rules are the state's call — check the official UT regulations and buy your license before you go. We link the source; we never restate the rules.
Upper Stillwater Reservoir fishing — FAQ
What fish are stocked in Upper Stillwater Reservoir?+
Upper Stillwater Reservoir is stocked with Brook Trout in Duchesne County, Utah, most recently on Jul 16, 2026 by Utah DWR. The full stocking ledger is on this page.
Do I need a license to fish Upper Stillwater Reservoir?+
Yes — Utah requires a fishing license. Buy one from the state and check current seasons and limits before you go; both are linked on this page.
Where is Upper Stillwater Reservoir?+
Upper Stillwater Reservoir is a reservoir in Duchesne County, Utah. Driving directions and an interactive topo map are on this page.
Data: Utah DWR · updated Jul 16, 2026 · checked daily · we publish what agencies publish, nothing else.